Composition of matter for the manufacture of road or street bricks.



106. cowosmows, COATING R PLASTIC.

Examiner UNITED STATES PATENT OFFICE.

HENRY DESBOROUGH PHILLIPS, OF INDIANAPOLIS, INDIANA.

COMPOSITION OF MATTER FOR THE MANUFACTURE OF ROAD OR STREET BRICKS.

No Drawing.

To all whom it may concern:

Be it known that I, HENRY D. PHILLIPS,

of Indianapolis, in the county of Marionand State of Indiana, haveinvented certain new and useful Improvements in Composition of Matterfor the Manufacture of Road or Street Bricks; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to im roved composition of matter for the manuacture of road or street bricks, the object being to produce a brickpossessing great hardness and which will be capable of resistingdampness.

This composition consists of the following ingredients, combined insubstantially the following proportions, viz:

Portland cement--- 100 pounds.

Sand 4 timesthe bulk of the cement. Arsenious acid (pulverized) Micacrystals (mesh No. 60) Blue vitriol (pulver- 1zed) Sulfur (pulverized)10 pounds.

6 pounds.

3 pounds. 1 pound.

' The process of manufacture is as follows: The cement and chemicals aremixed in the Specification of Letters Patent.

Application filed October 4, 1909. Serial No. 520,852.

Patented Apr. 12, 1910.

dry state, and after they have been thoroughly commingled, the sand isadded and the batch thoroughly mixed. After the dry mixing the necessaryamount of Water is added and the entire mass thoroughly agitated and aain mixed. From this compound the bIlCkS are .pressed or molded intoproper form, placed on cars and permitted to dry in-the open air forabout five (5) hours more or less and finally the cars are run intocylinders where the bricks are subjected to the action of steam forabout twenty-four (24%) hours more or less.

In the manufacture of bricks for the purpose stated, the use of theingredients in substantially the proportions above specified, isessentiall nn ortant.

Having fully escr1 ed my invention What I claim as new and desire tosecure by Letters-Patent, is

The herein described composition of matter for making road or streetbricks, consisting of cement, sand, arsenious acid, mica crystals, bluevitriol and sulfur, in substantially the proportions s ecified.

HENRY DESBOROUGH PHILLIPS.

Witnesses:

LEANDER L. LOUIS, HALLm G. SIEHR.

